Explore topic-wise MCQs in Chemistry.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Why is zone refining carried out in an inert atmosphere?

A. To prevent reduction of metal
B. To prevent oxidation of metal
C. To reduce the external pressure
D. To reduce the external temperature
Answer» C. To reduce the external pressure
Discussion
2.

Which of the following is not refined by zone refining method?

A. Germanium
B. Silicon
C. Gallium
D. Gold
Answer» E.
Discussion
3.

Which of the following is an electrolyte used during the electrolytic refining of copper?

A. Copper sulphate solution
B. Copper sulphate solution acidified with sulphuric acid
C. Sulphuric acid
D. Copper chloride
Answer» C. Sulphuric acid
Discussion
4.

What is the purity range for copper obtained from electrolytic refining?

A. 90-95%
B. 98-99%
C. 100%
D. 99.95-99.99%
Answer» E.
Discussion
5.

What is the anode made up of in electrolytic refining?

A. Impure metal
B. The metal ore
C. Pure metal
D. Double salt of metal
Answer» B. The metal ore
Discussion
6.

Which of the following processes is used to purify lead?

A. Distillation
B. Liquation
C. Electrolytic refining
D. Zone refining
Answer» C. Electrolytic refining
Discussion
7.

Zone refining is also called fractional crystallization.

A. True
B. False
Answer» B. False
Discussion
8.

Which of the following metals cannot be refined by distillation?

A. Zinc
B. Cadmium
C. Mercury
D. Tin
Answer» E.
Discussion
9.

Which of the following is not an impurity generally present in crude metals?

A. Other metals
B. Non-metals
C. Unreacted oxides
D. Pine oil
Answer» E.
Discussion
10.

Refining is not an important process in metallurgy.

A. True
B. False
Answer» C.
Discussion